:root{--ink:#233932;--muted:#748078;--accent:#215b42;--accent-light:#eaf2ec;--paper:#f7f8f4;--line:#e2e7df;--white:#fff;--danger:#b54737;--sans:'Microsoft YaHei','PingFang SC','Noto Sans CJK SC',sans-serif;--mono:'Cascadia Code',Consolas,monospace}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.6 var(--sans)}button,input,select,textarea{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer;transition:background .15s,border-color .15s;color:var(--ink)}button:disabled{opacity:.55;cursor:wait}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #92b6a0;outline-offset:3px}[hidden]{display:none!important}.brand{font:700 32px/1 var(--mono);letter-spacing:-3px;display:block}.brand span{color:#73a17d}.eyebrow{font:11px var(--mono);letter-spacing:2px;color:var(--muted);margin:0 0 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